There were no survivors, and the collision was seen by another pilot, as well as a guy riding his bike, who both called authorities to the crash site near New River, in the north Valley.

A Federal Aviation Administration spokesman told New Times the collision occurred around 10 a.m., about 15 miles west-northwest of the Deer Valley Airport.

Tthe National Transportation Safety Board, which will lead the accident investigation, typically doesn't determine the probable cause of accidents for several months. Even a preliminary report takes a week or two.

A statement from the CEO of TransPac, Stephen Goddard, says the company "cannot comment on possible causes of the accident while the investigation is ongoing."